On Monday between midday and midnight up to an inch and a half of rainfall is expected over west Galway and Co Mayo, with a risk of flooding in places.
The rest of the country will see a mostly cloudy day with outbreaks of rain. Most places will become dry in the afternoon. Rain will continue in Connacht and Ulster and also in coastal areas of Munster. The rain will be heaviest in west Connacht, with a risk of flooding there. It will be warm and humid, with highest temperatures of 17°C to 21°C. It will be breezy, with fresh southerly winds in the afternoon.
On Monday night, ex-tropical storm Helene will track northeastward close to the southeast of Ireland. Current forecasts indicate that south to southeast winds will reach gale or strong gale force at sea, and will be fresh to strong over land. However, it is possible that yellow level warning criteria may be reached in counties Cork, Waterford, Wexford, Wicklow, Dublin, Meath and Louth.
Rain will spread eastwards quickly across the country and will be heavy in many areas for a time with a risk of spot flooding. Lowest overnight temperatures will range from 12°C to 13°C.
Day one of the Ploughing will be a windy day, with a moderate to fresh southwest wind, strong and gusty at the coasts. Temperatures will be between 16°C and 20°C and it will be largely dry for much of the day, although there will be showers, especially on southern and western coasts. Tuesday night will be wet again, with another spell of rain approaching. Lowest temperatures will range from 9°C to 10°C.
Early on Wednesday, rain will spread eastwards across the country along with fresh to strong southwest winds for most areas, but possibly reaching gale force near northwestern coasts. Scattered showers will follow and winds will ease in the evening. Highest temperatures will range from 15°C to 18°C. More rain will develop in the south on Wednesday night.
Thursday is currently looking like the better of the days, with rain clearing to showers and winds easing light southwest to west for a time. They will increase again later.
The unsettled weather pattern is expected to continue through to the weekend, with breezy conditions and rain at times.
Watch: Ploughing video preview